/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ru.miit.elearning.servlets;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import ru.miit.elearning.hibernate.dao.AnnouncementDAO;
import ru.miit.elearning.hibernate.dao.HibernateUtil;
import ru.miit.elearning.hibernate.dao.WebLabUtil;

/**
 *
 * @author Cyclone
 */
public class AddAnnouncementServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        String message = null;

        Session session = null;
        try {

            String subject = request.getParameter("subject");
            String content = request.getParameter("content");

            int type = 0;
            try {
                type = Integer.parseInt(request.getParameter("type"));
            } catch (Exception e) {
                e.printStackTrace();
            }

            Integer curriculumLevelId = null;
            try {
                curriculumLevelId = Integer.parseInt(request.getParameter("courseId"));
//                System.out.println("=== AddAnn.Servlet:50 curriculumLevelId: "+curriculumLevelId);
            } catch (Exception e) {
  //              System.out.println("=== AddAnn.Servlet:54 Adding ann. with null curriculumLevel");
                if (!request.isUserInRole("admin")) {
                    e.printStackTrace();
                    message = "Неверно указана принадлежность объявления к курсу";
                    getServletContext().setAttribute("message", message);
                    response.sendRedirect("Announcements");
                    return;
                }
            }

            session = HibernateUtil.getSessionFactory().getCurrentSession();
            session.beginTransaction();

            AnnouncementDAO announcementDAO = new AnnouncementDAO(session);

            int userId = announcementDAO.findUserIdByLogin(request.getRemoteUser());

            announcementDAO.addAnnouncement(userId, type, subject, content, curriculumLevelId);
            if (session != null && session.isOpen()) {
                session.getTransaction().commit();
            }
            message = "Объявление добавлено";

            getServletContext().setAttribute("message", message);
            response.sendRedirect("Announcements");

        } catch (Exception e) {
            if (session != null && session.isOpen()) {
                session.getTransaction().rollback();
            }
            e.printStackTrace();

            message = "<p>Ошибка добавления объявления";
            message += WebLabUtil.prepareExceptionRef(request.getSession(), e);
            message += "</p>";
            getServletContext().setAttribute("message", message);

            response.sendRedirect("Announcements");

            
        } finally {
            if (session != null && session.isOpen()) {
                session.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
